1901-2000 Degrees Fahrenheit 1 30.8 35.9 -5.1 13 117 1960 2012 1965 1977 bottom-tenth 2 22.8 30.4 -7.6 4 126 1912 2012 1912 1977 bottom-tenth 1895 3 19.9 27.3 -7.4 5 125 1912 2012 1912 1977 bottom-tenth 4 20.4 27.0 -6.6 4 125 2014 2012 1912 1977 bottom-tenth 1979 5 24.0 29.2 -5.2 4 125 1912 2012 1912 1977 bottom-tenth 6 28.3 33.0 -4.7 5 124 1912 2012 1977 1976 bottom-tenth 7 33.4 37.4 -4.0 5 124 1912 2012 1977 1976 bottom-tenth 1918 8 37.8 41.6 -3.8 4 125 1904 2012 1977 1976 bottom-tenth 9 42.0 45.1 -3.1 6 123 1904 2012 1977 1976 bottom-tenth 10 44.5 47.5 -3.0 6 123 1904 2012 1977 1976 bottom-tenth 11 46.6 48.5 -1.9 12 117 1918 2012 1977 1976 bottom-tenth 1899 12 47.2 48.5 -1.3 19 110 1918 2012 1977 1976 bottom-third 1916,1963,1993,2015 18 40.9 43.3 -2.4 5 123 1905 2017 1918 1977 bottom-tenth 24 46.5 48.5 -2.0 3 125 1905 2017 1918 1977 bottom-tenth 36 47.6 48.4 -0.8 14 113 1905,1906,1918 2018 1970 1977 bottom-third 1913,1929,1930,1953 48 47.8 48.4 -0.6 19 107 1906 2002 1971 1977 bottom-third 1912,1962,1971 60 48.1 48.4 -0.3 30 95 1906,1908 2002,2020 1972 1977 bottom-third 1964,1965,1966,1972,1983